On the impact of f(Q) gravity on the large scale structure

被引：46

作者：

Sokoliuk, Oleksii ^{[1
]}

Arora, Simran ^{[2
]}

Praharaj, Subhrat ^{[2
]}

Baransky, Alexander ^{[3
]}

Sahoo, P. K. ^{[2
]}

机构：

[1] Astron Observ Natl Acad Sci Ukraine MAO NASU, UA-03143 Kiev, Ukraine

[2] Birla Inst Technol & Sci Pilani, Dept Math, Hyderabad Campus, Hyderabad 500078, India

[3] Taras Shevchenko Natl Univ Kyiv, Astron Observ, 3 Observatorna St, UA-04053 Kiev, Ukraine

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 522卷 / 01期

关键词：

Cosmological parameters-theory; Dark energy; Observations; Large-scale structure of Universe; N-BODY SIMULATIONS; DENSITY PROFILE; MODEL; CONSTRAINTS; ANISOTROPY; STATEFINDER; SUPERNOVAE; PARAMETER; DISTANCE; UNIVERSE;

D O I：

10.1093/mnras/stad968

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the exponential f(Q) symmetric teleparallel gravitation, namely f(Q) = Q +alpha Q(0)(1 - e(-beta root Q/Q0)) using ME-GADGET code to probe the structure formation with box sizes L-Box = 10/100 Mpc h (-1) and middle resolution N-p(1/3) = 512. To reproduce viable cosmology within the aforementioned modified gravity theory, we first perform Markov Chain Monte Carlo (MCMC) sampling on OHD/BAO/Pantheon data sets and constrain a parameter space. Furthermore, we also derive theoretical values for deceleration parameter q(z), statefinder pair {r, s} and ef fecti ve gravitational constant G(eff,) perform Om(z) diagnostics. While carrying out N-body+SPH simulations, we derive CDM+baryons over density/temperature/mean molecular weight fields, matter power spectrum (both 2/3D, with/without redshift space distortions), bispectrum, two-point correlation function and halo mass function. Results for small and big simulation box sizes are therefore properly compared, halo mass function is related to the Seth-Tormen theoretical prediction and matter power spectrum to the standard CAMB output.

引用

页码：252 / 267

页数：16

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